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Receiver circuit

A receiver and circuit technology, applied in receiver monitoring, electrical components, transmission systems, etc., can solve problems such as in-phase/quadrature phase mismatch in receiver circuits, reduce the degree of in-phase/quadrature phase mismatch, improve The effect of improving the signal-to-noise ratio and improving the overall data transmission volume

Active Publication Date: 2020-03-03
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, how to effectively improve the in-phase / quadrature phase mismatch in the receiver circuit is a problem to be solved

Method used

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Embodiment Construction

[0012] The embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals indicate the same or similar elements or method flows.

[0013] figure 1 This is a simplified functional block diagram of the transceiver 100 according to an embodiment of the present invention. The transceiver 100 includes a receiver circuit 110 and a transmitting circuit 120. In normal operation, the receiver circuit 110 can process the received signal Rx from the receiving antenna 102, and the transmitting circuit 120 can generate the transmission signal Tx to be transmitted through the transmitting antenna 104.

[0014] Before normal operation, the receiver circuit 110 performs an in-phase / quadrature phase mismatch correction procedure to eliminate or alleviate the in-phase / quadrature phase mismatch in the receiver circuit 110.

[0015] Such as figure 1 As shown, the receiver circuit 110 in this embodiment includes an analog ...

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Abstract

The invention provides a receiver circuit in a transceiver. The circuit comprises a correction circuit configured to perform an in-phase / quadrature-phase mismatch correction operation according to anin-phase detection signal and a quadrature-phase detection signal to generate one or more compensation parameters; a parameter storage circuit; the interference detection circuit is arranged to generate a signal-to-interference ratio estimated value according to the in-phase detection signal and the quadrature-phase detection signal; and a receiving end control circuit, and the receiving end control circuit is set to judge whether the one or more compensation parameters need to be abandoned or not according to the signal-to-interference ratio estimated value, and the receiving end control circuit can store the one or more compensation parameters into the parameter storage circuit only when the signal-to-interference ratio estimated value exceeds a preset critical value.

Description

Technical field [0001] The present invention relates to a transceiver (transceiver), in particular to a receiver circuit that can determine whether to discard in-phase / quadrature phase mismatch compensation parameters according to the signal-to-interference ratio. Background technique [0002] In the receiver circuits of many wireless communication devices, in-phase signal (I signal) and quadrature signal (quadrature signal, Q signal) often have gain mismatch and / Or phase mismatch (phase mismatch), also known as in-phase / quadrature phase mismatch (I / Q mismatch). [0003] The mismatch of the in-phase / quadrature phase will produce mirror frequency interference, which will cause the signal-to-noise ratio (SNR) of the receiver circuit to decrease, thereby reducing the overall system data throughput (throughput) . Summary of the invention [0004] In view of this, how to effectively improve the in-phase / quadrature mismatch in the receiver circuit is a problem to be solved. [0005] Thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B1/12H04B1/16H04B17/21
CPCH04B1/1027H04B1/12H04B1/16H04B17/21
Inventor 张元硕高子铭
Owner REALTEK SEMICON CORP